Sciweavers

FCT
2005
Springer
13 years 10 months ago
Leftist Grammars and the Chomsky Hierarchy
Leftist grammars can be characterized in terms of rules of the form a → ba and cd → d, without distinction between terminals and nonterminals. They were introduced by Motwani e...
Tomasz Jurdzinski, Krzysztof Lorys
FOSSACS
2010
Springer
13 years 11 months ago
Toward a Compositional Theory of Leftist Grammars and Transformations
Leftist grammars [Motwani et al., STOC 2000] are special semi-Thue systems where symbols can only insert or erase to their left. We develop a theory of leftist grammars seen as wor...
Pierre Chambart, Ph. Schnoebelen